Simple BMI evaluator vs NightRecovery

Enter your weight and height to see your Body Mass Index. The result updates as you type. Designed to work with VoiceOver: every field and button has a spoken label, your BMI is read together with its WHO category, the healthy weight range is read as a full sentence, and weight changes made with the +/- buttons are announced. Supports Dynamic Type: text and the BMI scale follow the text size chosen in iOS settings. WHAT IT SHOWS • Classic BMI and Trefethen's revised BMI (Oxford, 2013), which fits very tall and very short people better • WHO category, from severe thinness to obesity class III • The weight range that counts as normal for your height • A color scale showing where your value falls ALSO • Kilograms and meters, or pounds and feet • +/- buttons to adjust your weight without retyping it • Share the result • iPhone and iPad, no account needed Formulas and tables come from official sources, listed in the app under References. This app gives information only. It is not a medical device and does not replace advice from a doctor.

Apple Watch tracks your sleep. NightRecovery tells you how well your body actually recovered. The two work together: your watch collects overnight vitals while you sleep, and NightRecovery interprets them into a single recovery score (0–100) — so you know each morning whether to push hard or take it easy. Your score is built from four signals, compared against your personal 30-day baseline: • HRV — Heart rate variability during sleep, the strongest indicator of autonomic recovery • Resting Heart Rate — Lower than your baseline means better recovery • Sleep — Duration and efficiency compared to your personal norm • Respiratory Rate — Deviations can signal stress or illness Scores fall into three bands: green (recovered), yellow (moderate), and red (strained). The algorithm adapts to you — it needs about 7 nights to start scoring and improves over 14. FEATURES • One-glance recovery score with color-coded band • Detailed breakdown of each signal's contribution • Journal — add notes to any night for context • AI Export — share your data with ChatGPT, Claude, or any AI for personalized analysis • Trend charts to track recovery over time • Fully private — all data stays on your device • No account required, no subscriptions Requires Apple Watch or compatible device that records sleep and heart rate data to Apple Health.